Comparative X-ray and time-of-flight neutron diffraction studies of martensite crystal lattice in stressed and unstressed binary Ti–Ni alloys

Autor:	A. V. Tamonov, S. D. Prokoshkin, Vladimir Brailovski, Sylvain Turenne, I. Yu. Khmelevskaya, A. V. Korotitskiy
Rok vydání:	2006
Předmět:	Austenite Materials science Bainite Mechanical Engineering Neutron diffraction Thermodynamics Shape-memory alloy Condensed Matter Physics Crystallography Mechanics of Materials Residual stress Diffusionless transformation Martensite Hardening (metallurgy) General Materials Science
Zdroj:	Materials Science and Engineering: A. :549-552
ISSN:	0921-5093
Popis:	An X-ray and time-of-flight neutron diffraction study of a Ti–50.0 at.% Ni alloy was performed. The B19′ martensite lattice parameters are different for the quenched martensite and for the martensite formed from the austenite containing a well-developed dislocation substructure due to transformation-induced hardening. A tensile stress increases the “underrecovery” of the d h k l values of planes perpendicular to the axis of tension (and of the “apparent” martensite lattice parameters calculated from these d h k l values) after a cycle of transformation-induced hardening compared with the corresponding values of the initial quenched martensite. A probable cause for the differences between d h k l and lattice parameters of martensite formed from highly dislocated austenite and corresponding parameters of quenched martensite formed from recrystallized austenite are tensile components of stress fields generated by the dislocation substructure and/or residual stresses of different origin which are present in the initial austenite.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aaac01a4b786c52384842463d1c20f42 https://doi.org/10.1016/j.msea.2006.02.135 Zobrazit plný text záznamu Full Text from ScienceDirect